I like physical copys, but i do have some games in the HD: Trine 2, Shovel Knight, WWHD, Child of Light and Teslagrad.

Eventually, i am going to need one.

No hard disc drive attached, but instead a 128GB USB Key. Does that count as a yes?

what's the biggest hard drive the Wii U can handle and do some models make it over heat? I know for a fact some big hard drives caused PS3's to over heat so is it the same for the Wii U?? 

I use a 32 Gb flashdrive, (had basic model) might need to get an HDD soon though

the tagged game is indeed funny XD

anyhow, yep I have one, got one a bit ago, for Pikmin 3 I think. Good stuff. I can download games without worry again and it didn't cost a ton. My Wii U's harddrive has plenty of extra space too but eh, just leavin' that be.

I prefer retail releases but some games are digital only etc. so yeah

Of course. Physical copies are for dumb people :)

It prob only handles a slow 2TB rather than a fast one. I did some research and ended up buying a 1.5TB HDD for my PS4 instead of a 2TB HDD. People reckon it wouldn't handle a fast 2TB. 

I buy purely physical so no.

I have a 1TB hard drive for my Wii U. Pretty unnecessary since I go retail when the option is there. Even still I have enough eShop games that my 32 would already be used up.

I do, but i need to replace it with a usb powered one. the external powers go into standby and then freeze my VC games.